JSON to CSV Converter

JSON & Data

Export JSON arrays to CSV format, ready to open in Excel or Google Sheets.

JSON Input (array of objects)

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About JSON to CSV Converter

Export JSON arrays to CSV format, ready to open in Excel or Google Sheets. JSON to CSV Converter runs entirely in your browser — no installation, no uploads, and no data ever leaves your device.

Common use cases: export api data to spreadsheets; convert database json exports to csv reports; share json data with non-technical team members. Whether you are debugging, prototyping, or building production code, having a fast and private tool for this task saves time compared to writing one-off scripts or using an online tool that logs your data.

Like every tool in Catalyst, this one is free forever, requires no login, and is safe to use with confidential data. All processing happens client-side via native browser APIs.

How to use JSON to CSV Converter

1
Open the tool
Open JSON to CSV Converter directly — no signup or installation required. The interactive interface loads instantly.
2
Paste or enter your input
Drop your data into the input area. The tool validates and processes your input live as you type or paste.
3
Review the result
The output updates instantly. If the tool has configuration options, adjust them and watch the result update.
4
Copy or download
Use the copy button to send the result to your clipboard. Nothing is saved between page loads, so closing the tab discards everything.

Frequently asked questions

How are nested objects and arrays handled?

Nested objects are flattened using dotted key paths (user.address.city). Nested arrays are joined into a single cell with a configurable separator. If your structure is deeply nested, consider using JSONPath first to extract the flat portion you want to export.

Does the output include headers?

Yes. The first row of the CSV output is a header row derived from the union of all keys across objects in your input array. Keys that appear in some objects but not others produce empty cells for those rows.